laurent



.E. LAURENT.

STEAM GENERATOR. APPLICATION FILED mm: 4.1919.

1,315,024. Patented Sept. 2,1919.

2 SHEETS-SHEET1.

E I Ihvenior Edmond Lauren-3 b (mm b his AH-ome E.LAURENL STEAM GENERATOR.

APPLICATION FILED JUNE 4. I919.

Patented Sept. 2, 1919.

2 SHEETSSHEET 2 1 N 6 a F T Z N JB 3 Invenior EJI17DI1J Iowan") nmvrom) LAURENT, or HnLLE-MMns-LILLE, FRANCE. i

STEAM-GENERATOR.

Specification of Letters Patent. Patented S t 1919 Application medium 4, 1919. Serial No. 301,739.

To all whom it may concern:

Be it known that I, EDMOND LAURENT, citizen of the French Republic, residing at 32 Rue Victor Hugo, at I-Iellemmes-Lille, Nord, in the Republic of France, have invented new and useful Improvements in Steam-Generators, of which the following is a specification. a

This invention relates to improvements. 11

steam generators which insure a continuous circulation of water, a thorough combustion and a methodical heating. In its preferred each into two groups, the roup nearest to the feed opening into the bottom of the cylindrical. body and the group farthest away risingto a certain height into the said body. i

Thetwo tube groups in each cluster may be separated one from the other in the said cylindrical body by across partition and the tubes opening into the bottom of the said body may extend downwardly into a given depth in the boilers, the othertubes being connected to the upper part of these boilers.

Owing to this arrangement, the feed water entering the apparatus at the farthest end of the furnace at a. place where gases are cooler will be compelledto circulate from the main boiler body through the tubes and the lower boilers in order to reach aftera rapid and natural circulation the top. of the furnace at a very high temperature and thoroughly purified. The production of steam is greatly enhanced by this arrangement; and the gases are thoroughly utilized:

from their starting point in the furnace until they are discharged through the chimney. i

In the accompanying drawings, given by way of example Figure 1 shows a longitudinal vertical sectionof a steam generator constructed ac-* cording to this invention.

Fig. 2 is a corresponding cross section,

Fig. 3 is a longitudinal section of another arrangement.

. ig. is a cross section of a steam fgeneratorwith two cylindrical bodies.

Fig. 5 is a longitudinal section of a steam generator with stepped boilers. a

Fig. 6 isa longitudinal section of asteam generator comprising several transverse cylindrical bodies.

Fi n? shows a steam ner us with which is combined a tubular cluster arrangement according to this invention.

Fig. 8 is a detail showing an arrangement insuring the olecantation ofthe steam boiler feedwater.

The steam generator shown in Figs. 1 and 2 comprises a cylindrical body or shell 0 divided into four compartments by cross partitions 6. Under this cylindrical body C, are arranged transversely three boilers or lower drums '3, 4:, 5 :placedin the chamboiler having an, 1111-;

bers 3, 4:, 5, which communicate with each other through their upper ends. The cham her 3 is constitutedsbyjthe chamber proper ofthe furnace E situated at one end of the boiler and the chamber 5 communicates With the flue 7 leading to the chimney, the three chambers being thus successively traversed by the hot gases. The water is fed to the steamboiler at 8 in the most distantlcompartment from the furnace by a pipe descending close to, the :bottom of the:

steam boiler. It will be seen in the drawingsthat the boilers or drums 3, a, .5 com municate with the bodyG through nests of pipes comprising each .a\part-.1 situated beyond the partitioned with respect to i 1 the direction of the water circulation in boiler G and a part 2 situated on the other sideof: such partition. Thetubesl of each cluster .openflthus into thecoldest part of the corresponding ycompartment of the boiler and thewtubes 2 of this clusteropen into the hottest part-ofthe preceding compartment. The tubes 2 open into the lower part of the steam boiler while the tubes 1- rise toua certain height in thisboiler. It

willbe; readily understood that the described arrangement insures a rapid circulation of water and. a perfect utilization of the heat evolved from the gases. wli

The tubular clusters of the 1 lower boilers i 4, 5 are shown as divided into two groups by partitiOns 6 corresponding to the partitions 6 whereby the gases are properly guided. The boiler 3 is close to the masonry wall which separates the chambers 3, 4 and its tubular cluster is traversed by the furnace gases. This cluster could likewise be divided into two groups by a artition.

v, Fig. 3 shows a slightly modi ed construction wherein the cylindrical body C projects directly above the furnace F. 'This figure shows likewise that the tubes 2 may project a certain distance into the lower boilers.

case, at any intermediate point of its length by a wall M which allows the gases to pass thereabove, a lower drum being located in the chambers situated on either side of this wall.

Accordingto Fig. 6, the plant comprises four parallel cylindrical bodies C, C C C connected each toa boiler or drum by a cluster arranged like the clusters above described." These cylindrical bodies are connected together ,by pipes T, T which insure proper communication between the various cylindrical bodies for steam and water respectively. P

' Fig. 7 shows how the efliciency of an existing boiler C with an internal flue can be increased b arranging in the furnace chamber F a boi er B connected by a nest of tubes 1, 2 to a cylindrical body or upper boiler 0 The two lower boilers communicate with the upper boiler C through the tubes 10 and 11 respectively. j

Fig. 8 shows that by arranging in the boiler suitable balfle partitions 9 the decancation of the feed water can be effected.

' The lower boilers might be connected together by pipe lines, the cylindrical bodies could be provided with flues traversed by the hot gases and generally various changes may be made in the arrangements shown or described without departing from the nature of this invention. 7 Having now described my invention what I claim as new and desire to secure by Letters Patent 'is:

, 1. A- steam boiler comprising in combinasion means at the opposite end of said cylinder, chambers in communication with said furnace and adapted to be successively traversed by the furnace gases, lower drums in said chambers and nests of tubes connecting the lower drums to the upper cylinder, each of said nests comprising two adjacent groups of tubes, the tubes in the group nearest to the feed end of the boiler opening into and stopping at the bottom of the cylinder and the tubes in the other group in each nest extending into the body of the cylinder above the bottom thereof.

2. A steam boiler comprising in combination an upper cylinder having one end in proximity to the furnace, feed-water admission means at the opposite end of said cylinder, chambers in communication with said furnace and adapted to be successively traversed by the furnace gases, lower drums in said chambers and nests of tubes connecting the lower drums to the upper cylinder, each of said nests comprising two adjacent groups of tubes, the tubes in the group nearest to the feed end of the boiler opening into and stopping at the bottom of the cylinder and the tubes in the other group in each nest extending into the body of the cylinder above the bottom thereof, and transverse partitions in the cylinder between the two groups of tubes in each nest.

3. A steam boiler comprising in combination an upper cylinder having one end in proximity to the furnace, feed-water admission means at the opposite end of said cylinder, chambers in communication with said furnace and adapted to be successively traversed by the furnace gases, lower drums in said chambers and nests of tubes connecting the lower drums to the upper cylinder, each of said nests comprising two adjacent groups of tubes, the tubes in the group nearest to the feed end of the boiler opening into and stopping at the bottom of the cylinder and the tubes in the other group in each nest extending into the body of the cylinder above the bottom thereof, cross walls in the cylinder between the two groups of tubes in each nest and partitions between the two groups of tubes in each nest, in the part thereof which is located in the aforesaid chambers.

4. A steam boiler comprising in combination an upper cylinder having one end in proximity to the furnace, feed-water admission means at the opposite end of said cylinder, chambers in communication with said furnace and adapted to be successively traversed by the furnace gases, lower drums in said chambers and nests of tubes connecting the lower drums to the upper cylinder, each of said nests comprising two adjacent groups of tubes, the tubes in the group nearest to the feed end of the boiler opening into and stopping at the bottom of the cylinder and extending downward into the corresponding lower drum and the tubes in the other group in each nest extending into the body of the cylinder above the bottom of the cylinder and opening into the top of the correspond ing lower drum.

5. A steam boiler comprising in combination an upper cylinder with an inner flue having one end in proximity to the furnace,

a lower drum and an upper drum located in the furnace chamber, pipes connecting the upper and lower drums to the upper and lower part of the cylinder, respectively, and a nest of tubes connecting the upper and lower drums to each other, said nest comprising two adjacent groups of tubes, the tubes in one group opening into and stop ping at the bottom of the upper drum and c the tubes in the other group extending into the body of the upper drum above the bottom thereof.

6. A steam boiler comprising in combination an upper cylinder having one end in proximity to the furnace, feed-water admission means atthe opposite end of said cylinder, chambers in communication with the the bottom thereof, and deflectors adapted to form a vertically sinuous path for the feed water in the feed end of the upper cylinder.

In testimony whereof I have signed my name to this specification in the presence of the subscribing witness.

EDMOND LAURENT.

Witness CHAS. P. PRESSLY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D; 0." 

